Fabric treating machine



Nov. 16, 1937. E. BERNsTElN y 2,099,461

FABRIC TREATING MACHINE Filed Feb. 18, 1957 2 sheets-sheet 1 wif-z.

- Succ/WW mielmiem Nov. 16, 1937.

E. BERNSTEIN Y FABRIC TREATING MACHINE 2 Shee'cs-Sheet 2 Filed Feb. 18, 1937 Patented Nov. 16, 1937 UNITED STATES PATENT OFFICE FABRIC TREATING MACHINE Application February 18, 1937,-4 Seal No. 126,359 In Germany March 5, 1 934 6 Claims.

This invention relates to an apparatus for treating fabrics by the removal therefrom of floats left in the weaving. The object of the invention is to provide means whereby mechanically and automatically a fabric may be operated upon so as to c ut off the thread stubs or projections remaining when parting the floats.

In the manufacture of fabrics having spaced and intermittent cross-stripes of different colours or different kinds of weft threads, the respective weft thread has to be kept loosely at the selvedge during the time it is not used for Weaving the cross-stripes. 'I'hese weft threads are hereinafter referred to as weft threads" or "change-threads 15 and the oats thereby produced are hereinafter referred to as weft oats or change-floats for the purpose of this specification.

In the drawings,

Fig. 1 is a fragmentary view of a piece of fabric showing changeoats;'

Fig. 2 is a front elevation, partly in section, of my apparatus:

Fig. 3 is a side elevation of my apparatus;

Fig. 4 is a side elevation of my apparatus viewed from the other side. l y

As shown/in Fig. 1, a small piece of fabric "a fl* al) has cross-stripes b the threads of which form the y so-called change-oats c in the space between two successive cross-stripes 1).

So far, the weft or change-floats formed at the selvedge have been sheared or severed during the weaving by means of special devices. Also rotary basket members with spirally-shaped catching members and shearing devices parallelly arranged to the selvedge for cutting voil' the changeand weft oats have been mounted at the breast-beam.

Furthermore, it has been proposedA already to feed the changeor weft oats without injury to the selvedge, to a catching and cuttingl device 4" which operates independently from the loom and,

on the other hand, does not cause injury to the selvedge. To this end the weft floats are caught by a rctary disk d arranged perpendicularly to the selvedge and having catching portions"or 5" hooks e (Figs. 2 and 3) and severed by a separately driven cutting disk f being somewhat smaller in diameter than, and lying on, the disk d.

The cloth is fed past the catch disk dby rollers The device which is used for this purpose is shown in Figs. 2 to 4. A bracket 6 is swingably and fixably mounted beside the fabric on a shaft 5 andsupports at its bifurcated end 1, the support 8 upon which are mounted the two cutting disks 9 and I0 by which the changeorweft oats are cut off. The support 8 is suspended in a freely swinging manner by means of centre screws I I,i. e. screws having a pointed end portion like a centre-punch. A driving shaft I3 which is advantageously mounted in ball bearings I2 is providedon the bracket 6, having at its front end a gear wheel'ld meshing with a second gear Wheel I5 mounted inthe swinging support 8. The axis for the'swinging movement of the support 8 formed by the two screws I I is so arranged that it forms a tangent to the pitch-circles of the two wheels I 4, I5 so that the swinging of the support 8 does not interfere with the gearing of the two wheels.

Mounted on the shaft of the wheel I5 isahelical gear I6 engaging with the co-acting helical gear I8 mounted on the downwardly directed shaft I1. The shaft I1 is supported in two bearings at the upper and lower portion of the disk-carrying member 8. Two further helical gears I 9, 20 which vin turn mesh withthe two helical gears 2|, 22 of the cutting disks 9 and I0, are fast on the lower end of the shaft I'I. A resilient stop or feeling member 23 fast upon thedisk-carrying member 8 (Fig. 4) contacts by its tongue or projection 23a the edge of the fabric a, thereby preventing the cutting disks from cutting through the selvedge region into the fabric.

A suction nozzle 24 may be arranged opposite the cutting disks and the selvedge for sucking out the thread stubs and thereby facilitating the cutting action of the disks 9 and IU and drawing ofi the cut-ofE threads.

It will be seen that the two cutting disks 9 and Ill will readily and automatically perform the desired trimming of the selvedge of the fabric and due tothefact that the disks including their lcarrying member and the driving means are capable of swinging to and'from the selvedge, they will easily yield laterally so as to follow the possible curvatures or other irregularities of the selvedge.-

While Ihave herein shown and described a preferred embodiment of my invention, I Wish it to be understood that I do not conne myself to all the precise details herein set forth by way of illustration, as modification and `variation may be made without departing from the spirit of the invention or exceeding the scope of the appended claims.

Having thus claim is: l

1. In a device for cutting oif the weft threads of selvedges, a drive shaft, a stationary bearing for said drive shaft, a pendent support, a member rigid with said bearing upon which said support is mounted so as to be -capable of swinging freely toward and away fromv the edge of the cloth about an axis above the cloth, cutting means on said support adapted to cut off the weft threads immediately adjacent the selvedge, and power transmitting mechanism connecting said cutting means to said drive shaft so as to be driven thereby.

2. In a device for cutting off the weft threads of selvedges, a pendent support, a stationary member upon which said support is mounted to swing freely toward and away from the selvedge of the cloth about an axis above the cloth, two cutting discs mounted on said support to rotate about parallel axes perpendicular to said axis of swing and with their faces parallel to the selvedge, a drive shaft mounted in bearings rigid with said stationary member, and power transmission 'means connecting said drive shaft with said cutting discs.

3. In a devicefor cutting off weft threads ofselvedges, a pendent support, a stationary member upon which said support is mounted to swing freely toward 'and away from the selvedge of the cloth about an axis above the cloth, a pair of cutting discs mounted on said support 'adjacent described my invention, what I the selvedge, a drive shaft mounted in bearingsy rigid with said stationary member, and a helical gear transmission mechanism connecting said cutting discs with said drive shaft.

4. In a device for cutting o weft threads of selvedges, cutting means', a drive shaft, a stationary bearing for said drive shaft, power transmitting mechanism connecting said cutting means to said drive shaft so as to be driven thereby, said mechanism comprising a pair of meshing gears, a pendent support for said cutting mechanism, and a member rigid with said bearing upon which said support is mounted so as to be capable of swinging freely about an axis tangent to the pitch circle of said gears and above the cloth.

5. In a device for cutting oif weft threads of selvedges, a pendent support, a stationary member upon which said support is mounted to swing freely toward and away from the selvedge of the cloth about an axis above the cloth, a pair of cutting discs mounted on said support adjacent the selvedge, a drive shaft mounted in bearings rigid with said stationary member, a gear fixed on said drive shaft and a gear meshing therewith mounted on said support so that the pitch circles of said gears are tangent to the axis about which said support is mounted to swing, and a helical gear transmission connecting said second gear with said cutting discs.

, 6. In a device for cutting oif the weft threads of selvedges, a drive shaft, a stationary bearing for said drive shaft, a pendent support, a member rigid with said bearing upon which said support is mounted so as to be capable of swinging freely toward and away from the edge of the cloth about an axis above the cloth, cutting means on said support adapted to cut off the weft threads immediately adjacent the selvedge, a feeling member on said support for positioning said cuttingmeans with respect to the selvedge, and power transmitting mechanism connecting said cutting means to said drive shaft so as to be driven thereby.

ERNST BERNSTEIN. 

